Burglar and fire alarm installation



'= March 17, 1931. A. BURLI BURGLAR AND FIRE ALARM INSTALLATION 4 Sheets-Sheet 1 Filed Nov. 22. 1928 March 17, 1931. A. BURL] 8 BURGLAR AND FIRE ALARM INSTALLATION Filed Nov. 22. 1928 4 Sheets-Sheet 2 March 17, 1931. BURL] 1 ,796,358

BURGLAR AND FIRE ALARM INSTALLATION Filed Nov. 22, 1928 4 sheetssheet 3 /////////////////////(///////W//flfl///fl///////fl&

' I/V\/EN7'OR March 17, 1931. BURL] BURGLAR AND FIRE ALARM INSTALLATION 4 Sheetsf- Sheet 4 25. 7.

Filed Nov. 22. 1928 .1 r Ia(ll!!!IIIIIIIIIIIIIIII/lf!llllllllrlflllll Patented Mar. 17', 1931 PATENT OFFICE ALOIS BUB-LI, OF LUOEBNE, SWITZERLAND Bun'onan am) FIRE ALARM INSTALLATION Application filed November 22, 1928, Serial No. 321,177, and in Germany Ian-nary 10,1828.

This invention relates to a burglar or fire alarm installation adapted to be associated with an automatic telephone system.

, According to the invention, in the event of a burglary -orof an outbreak of fire .occurring, the telephone line is connected with a circuit containing a microphone associated with a talking machine such as a gramophone, the said talking machine, '10 and a selector wheel actuating. an impulsetransmitter to call up a police station, a fire station or the like, also being automatically set in motion. v

In its preferred form the invention comprises a primary circuit adapted to be interrupted by a burglary or an outbreak of fire, an impulse-transmitter of thedial type connected in the same circuit as the microphone associated with the talking machine, an electric motor for actuating this impulse transmitter and also the gramophone turntable and an automatic switching device, and a relay for switching on the motor when the primary circuit is interrupted. I I

A constructional example of the invention is shown in the accompanying drawings,

in which Fig. 1 is a wiring diagram;

Fig. 2 is a ratus;

Fig. 3 Fi 2, with the cover removed;

ig. 4 is a view in the direction ofthe arrows A, A in Fig; 3;

is a plan of the apparatus shown in arrows B, B of Fig. 3.

Fig. 6 is a plan view of the cover, and

Fig. 7 is a section on the l'me CC.in Fi I V l n the constructional example illustrated the cover 1a is arched over a base plate 1. On'the base plate -1 are mounted a motor 10, a transformer 3, the terminals 2 and .a local 'battery19. At the back of the front wall.

front elevation of the appa-v Fig. 5 is a view in thedirection of the cam 33. The contact wheel also carriers :1. row of contact pins 26 on the back, a contact pin 26a on the front, and another contact pin 26b on the back.

Adjacent to the contact wheel 16 are, mounted the various contacts actuated theretact 32, whereby the contact cam 33-switches over the telephone exchange line fromthe ordinary subscribers telephone instrument press button 18 are shown mounted outside the front wall of the cover 1;. 5, 11, 24

and 18 may suitably be fitted adjoining a door leading out of the protected room, and not, as indicated in Figures 2 and 5, on the apparatus itself. The plug sockets 22a (Fig. 2) serve for plugging in a wire running to a gas generator 22 (Fig; 1) if the latter is not permanently connected. In the latter case the switch 21 serves for switching it off. The plug sockets 22b serve for connecting up a control head phone when testing in order 'to ascertain whether the ap aratus is in correct working order.

n the back of the ap aratus the gear wheels 40a and 406 are tted. The gear ,wheel 40a is mounted fast on the shaft 41,

to which the selector wheel 34 and the contact whee1'16 mentioned above are also secured. The gear wheel 40a meshes'with. a pinion 42, which is mounted fast on the same shaft as the gear wheel 40b. The latter meshes'with apinion 43, which is mounted fast on a bush '44 rotatably mounted upon by, namely: a doublepole switch-over conthe shaft 41. On this bush 44 there is in addition a worm wheel 45, which is driven by a worm from the motor 10. a On the bush 44 there is also a friction wheel 46, the coacting' wheel 47 of which a is splined to a Vertical hollow shaft 48. By driving the hollow shaft 48, on the upper end of which there is a turntable 49 for a talking-machine record 50, a notification based on the gramophone system is effected.

Vhen the talking machine starts, the needle 51 is in a known way put on near the periphery of the record 50 and subsequently runs towards the centre of the record. As soon as the needle 51 has arrived here a -am 52 mounted on the shaft 41 lifts a rod 53, which is longitudinally slidable in the hollow shaft 48, and on the upper end of which there is an arm 54, which tilts a slideway consisting of a pivoted rod 55, on which the tone arm 38 slides back towards the periphery of the record 50, where the needle 51 is again automatically adjusted ready for operation, so that the spoken noti fication will continue as long as the disc 16 is rotating.

Since it would be useless for the gramophone to start delivering its message before the alarm-receii 'ing station has been called up, the friction disc 46 may be slidably but 'non-rotatably connected with the hollow shaft 44, and a cam secured to the 10*. -spced shaft 41 may keep the friction disc 47 out of contact with the friction disc 46 for about one-fifth of a revolution of the shaft 41. that is to say, until the selector wheel 34 has finished acting upon the impulse transmitter 34a. In this case the cam would separate the friction discs again upon the completion of one revolution of the shaft 41. As shown in Figure 7 a portion of the -am 52 that lifts the rod 53 is employed to raise the friction disc 47, and this would he practicable provided the record lasted about two minutes, the contact wheel 16 being provided with a repeat contact as hereinafter suggested. In general, however, it would be preferable to provide separate cams for the rod 53 and the disc 47.

The selector wheel 34 mounted on the shaft 41 is provided with toothed segments 56 (Fig. 5), which, on rotation of the let-tor wheel 34, mesh with the teeth of the inipulse-transinitter 34a. By rotating the selector wheel 34, therefore, the impulsetransmitter 34a is actuated by means of the toothed segments 56, and sends impulses just like the known inipulse-transmitters of the dial type. operated by hand in ordinary automatic telephone installations. The space between the segments 56 permits of the dial returning to the normal again. In this way the selection of a particular telephone number is effected.

On a strut 57 extending between the front and back walls of the apparatus two relays 8 and are as shown in Figs. 1 to 5. On a support 58 is mounted an alarm microphone 36, a local alarm bell and a control alarm hell 6.

The relay 8 is provided with pairs of springs 7 and 9, while the pairs of springs 12, 13 and 14 belong to the relay 15.

When the relays 8 and 15 are energized the arn'iatures' 9a and 15a assume the horizontal position. In this case, in the relay 8 the pair of springs 7 are closed and the pair of springs 9 are open. In the relay 15 in the energized state the pair of springs 14 are open while the pairs of springs 12 and 13 are closed. In a tic-energized condition the contrary is the case, therefore in that event, in the relay 8 the springs 7 are opened and the springs 9 are' closed, while in the relay 15 the springs 14 are closed and the 3 springs 12 and 13 are open.

The contact wheel 16 is shown in Fig. 1 in the position of rest, that is to say, the tele phone wire 31 is connected by way of the contacts 32 with the instrument and is in the normal working condition.

The contact wheel 16 rotates once in about two and a half minutes by the aid of the motor 10.

The selector wheel 34 and the contact wheel 16 may be combined, and they have only been shown separate for the sake of clearness.

The selection of the'icalled subscriber by means of the selector disc 34 and the impulse-transmitter 340 takes about 30 seconds.

The pins 26 are, adapted to close the pair of springs 23 five times at intervals of 'from 2 to 5 seconds, and consequently produce a repeated local alarm signal at 25, namely by way of 19, 23, 24, 25, 19.

The alarm signal 25 for local alarm also comes into operation if the relay 15 is de energized, namely by way of 19, 14, 24, 25, 19. Just before the contact wheel comes to rest, the contact 17 is opened by the pin 26, the relay 15 is de-energized, the motor 10 stops, and the alarm 25 rings out.

Owing to the cam dropping at 33 on the contact wheel, the contact 32 is switched over or reversed, owing to which the line 31 is again connected with the ordinary telephone instrument 31) by way of the springs 32. In this way normal telephone conditions are again restored. The entire installation, with the exception of the bell 25, is now out of operation.

The installation is tested and put into operation as follows The source of current is the lighting main 3a, or the transformer 3. The switches 11, 24, and 21 are opened. The testing key 5 is pushed in and the pair of springs 5a are thereby closed, whereupon the control alarm 6 rings out if all the contacts of the burglary .alarm installation 4 are closed. The current passes by way of 3, 4, 5a, 6, 3. If the control alarm fails to ring out, then there is an interruption somewhere in the installation 4 and the defect must first be put right.

At the same time, by means of the control key 5, the pair of springs 5b is also closed, by which the relay 8 is energized.

The current passes by way of 3, 4, 5b, 8, 3.

The duration of contact at 5?) for energizing the relay is, however, exceedingl short, and the relay is further energized, a terithe control key 5 is released, by the new circuit now formed 3, 4, 7, 8, 3. 'Then' the key 18 is depressed and the relay thereby energized, over the circuit 3, 18, 15, 17, 3.- By the energizing of the relay 15 another circuit is formed, which further feeds the relay from 3, in the direc tion of the arrows in Fig. 1, through 13, 15,

. 17, 3. Then the switches 11, 24 arid 2 1 are closed, and the installation is ready to give an. alarm. I

If any one of the contacts 4 is now broken as a-result of an attempt at burglary or an outbreak of firejthe relay"8 is de-energized' and its armature reverts, to the inclined position shown in dotted lines in Figure 1, thereby opening the contacts 7 and closing the contacts 9. This closes the motor circuit from the transformer 3 through the contacts 9, the motor 10, the switch 11, and the contacts 12 of the energized relay Iii-back to the transformer 3 in .a direction opposite to that of the arrows in Figure 1. By means of the worm gearing 45 and the spur gearing'43, 40b, 42 and 40a themotor 10 now rotates the shaft 41, and with it the contact wheel 16, the selector wheel 34, the cam 52, and the friction wheel 46. The cam 33 therefore disconnects the telephone exchange line 31 from the telephone instrument and connects it with the impulse-transmitter 34a and the microphone 36 by pushing away the contact springs. 32, the selector wheel 34 calls up the police station or the fire station by means of the alarm impulse transmitter;34a, and the gramophone 38 then speaks into the alarm microphone 36 the message on the record 50. .Meanwhile thepin 26?) puts the gas-generator 22 into operation by means of the contact at 20 if the switch 21 is closed, and the pins 26 deliver @cal signals at the bell 25. When thecontact disc 16 has almost completed one revolution the pin 26a momentarily separates the contacts 17 thereby deenergizing the relay 13 by interrupting the circuit 3, 13, 15, 17, 3. This interrupts the motor circuit at 12, and the motor 10 is put out of operation. At the same time, by the dropping of the double pair of springs 32 into the recess adjoining the cam 33, the telephone instrument 30 is once more connected to the exchange line 31.

In the event of its being necessary to re- Ipleat the notification this may be done by 0.1.

tting a repeatcontact on the contact wheel- 16., Such a repeat contact might for instance temporarily close the key 18, or another pair of contacts in parallel therewith, after the pin 26a;v had allowed the contacts 17 to re-close.

the'alarm, and therefore both the relays 8 and 15 are energized, the current from the mains 3a is nevertheless switched off, by a criminal for instance, then the relay 15 enters into the oblique de-energized position indicated in dotted lines in Figure 1, where- .upon by the relay 15 the contact 14 is closed,

and the local battery' 19 produces continuous local alarm through the alarm gear 25, by

-way of 14, 24, 25, l9. By contrast with the notification or alarm' made by the contact wheel, which is repeatedly interrupted, it is perfectly easy to recognize whether a notification to the exchange line 31 or a disturbance of the source of current is in question, because the interruption of the alarm signals by the springs 23 and the pins 26 only occurs when the'contac't 14 is open, that is to say, when the relay 15 is energized.

I claim: I 1. A burglar or fir alarm installation for use in conjunction an ordinar subscribers telephone'instrument normal y connected to a telephone line leading to an automatic telephone exchange, comprising an alarm microphone and'an alarm mpulse transmitter separate from the ordinary telephone instrument, .a talking machine such as a gramophone so placed as to speak into the alarm microphone, an automatic switching device capable of disconnecting the telephone line from the ordinary telephone instrument use in conjunction with an ordinary sub- .scribers telephone instrument normally connected to a telephone line leading to an automatic telephone exchange, comprising an alarm microphone and an alarm impulse transmitter separate from the ordinary telephone instrument, a talking machine such as a gramophone so placed as to speak into the alarm microphone, an automatic switching device capable of disconnecting the telephone line from the ordinary telephone instrument and connecting it with the alarm microphone and the alarm impulse transmitter, a selector wheel for actuating the alarm impulse transmitter, an electrical power supply, such as an electric lighting main, an electric motor adapted to drive the talking machine, the automatic switching device and the selector If when the installation is ready to give I wheel, a primary alarm circuit adapted to be interrupted by the occurrence of the circumstances under which an alarm should be given, and a relay adapted to switch the motor on to the power supply when the primary alarm circuit is interrupted.

3. A burglar or fire alarm installation for use in conjunction with an Ordinary subscribers telephone instrument normally connected to a telephone line leading to an automatic telephone exchange, comprising an alarm microphone and an alarm impulse transmitter separate from the ordinary telephone instrument, a talking machine such as a gramophone so placed as to speak into the alarm n'iierophone, an automatic switching device capable of disconnecting the telephone line from the ordinary telephone instrument and connecting it with the alarm microphone and the alarm impulse transmitter, a selector wheel for actuating the alarm impulse transmitter, an electrical power supply, such as an electric lighting main, an electric motor adapted to drive the talking machine, the automatic switching device and the selector wheel, a primary alarm circuit adapted to be interrupted by the occurrence of the circumstances under which an alarm should be given, a relay adapted toswitch the motor on to the power supply when the primary alarm circuit is interrupted, and means .for stopping the motor and reconnecting the telephone line with the ordinary telephone instrumentafter the alarm has been given for a predetermined length of time.

4. A burglar or fire alarm installation for use in conjunction with an ordinary subscribers telephone instrument normally connected to a telephone line leading to an automatic telephone exchange, comprising an alarm microphone and an alarm impulse transmitter separate from the ordinary telephone instrument, a talking machine such as a gramophone so placed as to speak into the alarm microphone, an automatic switching device capable of disconnecting the telephone line from the ordinary telephone instrument and connecting it with the alarm microphone and the alarm impulse transmitter, a selector wheel for actuating the alarm impulse transmitter, means for automatically actuating the talking machine, the automatic switching device and the selector wheel in the event of circumstances arising for giving an alarm, and means for testing the working of the installation.

5. A burglar or fire alarm installation for use in conjunction with an ordinary subscriber s telephone instrument normally connected to a telephone line leading to an automatic telephone exchange, comprising an alarm microphone and an alarm impulse transmitter separate from the ordinary telephone instrument, a talking machine such as a gramophone so placed as to speak 1nto adapted to switch the motor 011 to the power supply when the. primary alarm circuit is interrupted, a testing bell, and a testing key adapted to close the primary alarm circuit through the testing bell.

(S. A burglar or fire alarm installation for use in conjunction with an ordinary subscribers telephone instrument normally connected to a telephone line leading to an automatic telephone exchange, comprising an alarm microphone and an alarm impulse transmitter separate from the ordinary telephone instrument, a talking machine such as a gramophone so placed as to speak into the alarm microphone, an automatic switching device capable of disconnecting the telephone line from the ordinary telephone instrument and connecting it with the alarm microphone and the alarm impulse transmitter, a selector wheel for actuating the alarm impulse transmitter, an electric motor adapted to drive the talking machine, the automatic switching device and the selector wheel, an electrical power supply, such as an electric lighting main, a primary alarm circuit adapted to be interrupted by the occurrence of the circumstances under which an alarm' should be given, a relay adapted to switch the motor on to the power supply when the primary alarm circuit is interrupted, a battery circuit, and means for sounding a local alarm by the aid of the battery circuit in the event of the electrical power supply not being available when the primary alarm circuit is interrupted.

7. A burglar or fire alarm installation for use in conjunction with an ordinary subscribers telephone instrument normally connected to a telephone line leading to an automatic telephone exchange, comprising an alarm microphone and an alarm impulse transmitter separate from the ordinary telephone instrument, a talking machine such as a gramophone so placed as to speak into the alarm microphone, an automatic switching device capable of disconnecting the telephone line from the ordinary telephone instrument and connecting it with the alarm microphone and the alarm impulse transmitter, a selector wheel for actuating the alarm impulse transmitter, an electrical power supply, such as an electric li hting main, an electric motor adapted to drlve the talking machine, the automatic switching device and the selector wheel, a primary alarm circuit adapted to be interrupted by the occurrence of the circumstances under which an, alarm should be given, a relay' normally energized from the power supply through the primary alarm circuit when the.

installation is in use, and adapted when deenergized' to connect the motor with the 'power supply, and a second relay normally energized from the power supply when the installation is in use, and adapted when deenergized to disconnect the motor'from the power supply, even if the first relay is also (lo-energized, the automatic switching device being adapted tore-connect the telephone line with the ordinary telephone instrument and tie-energize the second relay after the motor has been running for a predetermined time. p

8. A burglar or fire alarm installation for use in conjunction with an ordinary subscribers telephone instrument normally connected to a telephone line leading to an automatic telephone exchange, comprismg an alarm microphone and an alarm impulse transmitter separate from the ordinary telephone instrument, a talking machine such as a gramophone so placed as to speak into the alarm microphone, an automatic switching device capable ,of disconnecting the telephone line from the ordinary telephone instrument and connecting it with the alarm microphone and the alarm impulse transmitter, a contact wheel adapted to actuate the automatic switching device, a selector wheel for actuating the alarm impulse transmitter, an electrical power supply,- such as an electric lighting main, an electriclmotor adapted to drive the talking machine, the contact wheel and thelselector wheel, a primary alarm circuit adapted, to be interrupted by- I the occurrence of the circumstances under which an alarm should be given, a battery circuit, a local alarm bell in the battery circuit, contact pins on the contact wheel adapted to close the battery circuit through the local alarm bell intermittently as the contact wheel rotates, means adapted to be actuated by the contact wheel for-evolving noxious gases, a relay normally energized from the power supply through the primary alarm circuit when the installation is in use, and I adapted when tie-energized to connect the motor with the power supply, a second relay normally energized from the power supply when the installation is in use, and adapted when de-energized to disconnectthe motor from-the power supply, even if the first relay is' 'also. de-energized, the automatic switching device being adapted-to re-connect the telephone line with the ordinary telephone instrument and de-ener gize the second 7 to recommence relay after the contact wheel has completed one revolution, means for closing the battery circuit through the local alarm bell independently of the contact wheel whenever the second relay is deenergized.

9. A burglar or fire alarm installation for use in conjunction with an ordinary subscribers telephone instrument normally connect- 7 the talking machine, the automatic switching device and the selector wheel in the event of circumstances arising for giving an alarm, a record mounted on the talking machine, and means for causing the talking machine playing the record when it reaches the end.

10. A burglar or fire alarm installation for use in conjunction with an ordinary subscrib- 9 ers telephone instrument normally connected to a telephone line leading to an automatic telephone exchange, comprising an alarm microphone and an alarm impulse transmitter separate from the ordinary telephone instrument, a talking machine such as a gramophone so placed as to speak into the alarm microphone, the said talking machine including a sound box, a needle and a rotatable support, adapted to hold a record, an automatic switching device ca able of disconnecting the telephone line rom the ordinary telephone instrument and connecting it with the alarm microphone and the alarm impulse transmitter,a selector wheel for actuating thealarm impulse transmitter,

an electric motor adapted to drive the talk ing machine, the automatic switching device and the selectorwheel, means for automatically actuating the talking machine, the automatic switching device and the selector wheel in the event of circumstances arising for giving an alarm, a rotatablyinountcd shaft driven by the electricvmotor, an eccentric secured to the said shaft, a slidable rod adapted to befraisedby the eccentric, and a normally horizontal 'slideway pivotally mounted at one end inthe neighborhood of I the starting point of the recordand adapted to be raised at'its freeend by the raising of the slidable rod-and'therebyto lift the sound box andlneedlef 01f the record when the needle reaches the jend ofthe record and allow'them to slide back to thestarting point of "the record under 't he action] of gravity. v a

11. A burglar or fire alarm installation for use in conjunction with an ordinary subscribers telephone instrument normally connected to a telcphiue line leading to an automatic telephone exchange, comprising a microphone, a talking machine such as a gramophone so placed as to speak into the microphone, an alarm impulse transmitter, a selector wheel adapted to impart any redetermined succession of groups of impu ses to the alarm impulse transmitter, means for antomati ally actuating the talking machine and the selector wheel in the event of circumstances arising for giving an alarm.

12. A burglar or fire alarm installation for use in conjunction with an ordinary subscribers telephone instrument normally connected to a telephone line leading to an automatic telephone exchange, comprising a microphone, a talking machine such as a gramophone so placed as to speak into the microphone, an alarm impulse transmitter, a selector wheel adapted to impart any predetermined succession of groups of impulses to the alarm impulse transmitter, an electrical power supply, such as an electric lighting main, an electric motor adapted to drive the talking machine and the selector wheel, a primary alarm circuit adapted to be interrupted by the occurrence of the circumstances under which an alarm should be given, and a relay adapted to switch the motor on to the power supply when the primary alarm circuit is interrupted.

13. A burglar or fire alarm installation for use in conjunction with an ordinary subscribers telephone instrument normally connected to a telephone line leading to an automatic telephone exchange, comprising a microphone, a talking machine such as a gram ophone so placed as to speak into the microphone, an alarm impulse transmitter, a selector wheel adapted to impart any prede termined succession of groups of impulses to the alarm impulse transmitter, an electrical power supply, such as an electric lighting main, an electric motor adapted to drive the I talking machine and the selector wheel, a primary alarm circuit adapted to be interrupted y the occurrence of the circumstances under which an alarm should be given, a relay adapted'to switch the motor on to the power supply when the primary alarm circuit is interrupted, a contact wheel, also driven by the electric motor, and means adapted to be actuated by the contact whee for evolving noxious gases. 1

14, A burglar or fire alarm installation for use in COIlJllIlCtlOIl with an ordinary subscribers telephone instrument normally connected to a telephone line leading to an automatlc telephone exchange, comprising a microphone, a talking machine such as a gramophone so placed as to speak into the microphone, an alarm impulse transmitter, gear teeth on the periphery of the alarm impulse transmitter, a selector wheel, groups of teeth on the periphery of the selector wheel adapted to mesh with the gear teeth of the impulse transmitter to cause it to transmit groups of impulses, the groups of teeth being far enough apart to allow the impulse transmitter to return to its position of rest between the groups of impulses, and means for automatically actuating the talking machine and the selector wheel in the event of circumstances arising for iving an alarm.

15. A burglar or use in conjunction with an ordinary subscribers telephone instrument normally connected to a telephone line'leading to an automatic telephone exchange, comprising a microphone, a talking machine such as a gramophone so placed as to speak into the microphone, an alarm impulse transmitter, gear teeth on the periphery of the alarm impulse transmitter, a selector wheel, exchangeable marginal toothed segments on the periphery of the selector wheel adapted to mesh with the gear teeth of the impulse transmitter to cause it to transmit groups of impulses, the toothed segments being far enough apart to allow the impulse transmitter to return to its position of-rest between the groups of impulses, and means for automatically actuating the talking machine and the selector wheel in the event of circumstances arising for giving an alarm.

ALOIS BURLI.

re alarm installation for 

